Ceramic disc furnace



FIG. 1 is a front perspective view of the ceramic disc furnace, showing the new design;

FIG. 2 is a right perspective view thereof;

FIG. 3 is a top perspective view thereof; and,

FIG. 4 is a back perspective veiw thereof.

The surface(s) or portion(s) of the article not shown in the drawing or described in the specification form(s) no part of the claimed design. 

The ornamental design for a ceramic disc furnace, as shown and described. 